tests/lib/libc/c063/t_mknodat.c

   1 /*      $NetBSD: t_mknodat.c,v 1.3 2013/03/17 04:46:06 jmmv Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2012 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Emmanuel Dreyfus.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31 #include <sys/cdefs.h>
  32 __RCSID("$NetBSD: t_mknodat.c,v 1.3 2013/03/17 04:46:06 jmmv Exp $");
  33
  34 #include <atf-c.h>
  35 #include <errno.h>
  36 #include <fcntl.h>
  37 #include <limits.h>
  38 #include <paths.h>
  39 #include <stdio.h>
  40 #include <string.h>
  41 #include <unistd.h>
  42 #include <sys/param.h>
  43 #include <sys/stat.h>
  44
  45 #define DIR "dir"
  46 #define FILE "dir/openat"
  47 #define BASEFILE "openat"
  48 #define FILEERR "dir/openaterr"
  49
  50 static dev_t get_devnull(void);
  51
  52 static dev_t
  53 get_devnull(void)
  54 {
  55         struct stat st;
  56
  57         if (stat(_PATH_DEVNULL, &st) != 0)
  58                 return NODEV;
  59
  60         return st.st_rdev;
  61 }
  62
  63
  64 ATF_TC(mknodat_fd);
  65 ATF_TC_HEAD(mknodat_fd, tc)
  66 {
  67         atf_tc_set_md_var(tc, "descr", "See that mknodat works with fd");
  68         atf_tc_set_md_var(tc, "require.user", "root");
  69 }
  70 ATF_TC_BODY(mknodat_fd, tc)
  71 {
  72         int dfd;
  73         int fd;
  74         dev_t dev;
  75         mode_t mode = S_IFCHR|0600;
  76
  77         ATF_REQUIRE((dev = get_devnull()) != NODEV);
  78         ATF_REQUIRE(mkdir(DIR, 0755) == 0);
  79         ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1);
  80         ATF_REQUIRE((fd = mknodat(dfd, BASEFILE, mode, dev)) != -1);
  81         ATF_REQUIRE(close(fd) == 0);
  82         ATF_REQUIRE(access(FILE, F_OK) == 0);
  83 }
  84
  85 ATF_TC(mknodat_fdcwd);
  86 ATF_TC_HEAD(mknodat_fdcwd, tc)
  87 {
  88         atf_tc_set_md_var(tc, "descr",
  89                           "See that mknodat works with fd as AT_FDCWD");
  90         atf_tc_set_md_var(tc, "require.user", "root");
  91 }
  92 ATF_TC_BODY(mknodat_fdcwd, tc)
  93 {
  94         int fd;
  95         dev_t dev;
  96         mode_t mode = S_IFCHR|0600;
  97
  98         ATF_REQUIRE((dev = get_devnull()) != NODEV);
  99         ATF_REQUIRE(mkdir(DIR, 0755) == 0);
 100         ATF_REQUIRE((fd = mknodat(AT_FDCWD, FILE, mode, dev)) != -1);
 101         ATF_REQUIRE(close(fd) == 0);
 102         ATF_REQUIRE(access(FILE, F_OK) == 0);
 103 }
 104
 105 ATF_TC(mknodat_fdcwderr);
 106 ATF_TC_HEAD(mknodat_fdcwderr, tc)
 107 {
 108         atf_tc_set_md_var(tc, "descr",
 109                   "See that mknodat fails with fd as AT_FDCWD and bad path");
 110         atf_tc_set_md_var(tc, "require.user", "root");
 111 }
 112 ATF_TC_BODY(mknodat_fdcwderr, tc)
 113 {
 114         int fd;
 115         dev_t dev;
 116         mode_t mode = S_IFCHR|0600;
 117
 118         ATF_REQUIRE((dev = get_devnull()) != NODEV);
 119         ATF_REQUIRE((fd = mknodat(AT_FDCWD, FILEERR, mode, dev)) == -1);
 120 }
 121
 122 ATF_TC(mknodat_fderr);
 123 ATF_TC_HEAD(mknodat_fderr, tc)
 124 {
 125         atf_tc_set_md_var(tc, "descr", "See that mknodat fails with fd as -1");
 126         atf_tc_set_md_var(tc, "require.user", "root");
 127 }
 128 ATF_TC_BODY(mknodat_fderr, tc)
 129 {
 130         int fd;
 131         dev_t dev;
 132         mode_t mode = S_IFCHR|0600;
 133
 134         ATF_REQUIRE((dev = get_devnull()) != NODEV);
 135         ATF_REQUIRE(mkdir(DIR, 0755) == 0);
 136         ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
 137         ATF_REQUIRE(close(fd) == 0);
 138         ATF_REQUIRE((fd = mknodat(-1, FILE, mode, dev)) == -1);
 139 }
 140
 141 ATF_TP_ADD_TCS(tp)
 142 {
 143
 144         ATF_TP_ADD_TC(tp, mknodat_fd);
 145         ATF_TP_ADD_TC(tp, mknodat_fdcwd);
 146         ATF_TP_ADD_TC(tp, mknodat_fdcwderr);
 147         ATF_TP_ADD_TC(tp, mknodat_fderr);
 148
 149         return atf_no_error();
 150 }